Elevator-boot.



No. 844,038. PATENTED PEB.12, 1907.- RMUNN. ELEVATOR BOOT.

APPLICATION FILED JUNE 28, 1906.

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RODGER MUNN, OF ANAOONDA, MONTANA.

ELEVATOR BOOT.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed June 28, 1906. Serial No. 323,9'70.

To all whom/ it m/u/ l concern/.-

Be it known that I, Rononn MUNN, a citizen of the United States, residing at Anaconda, in the county of Deerlodge and State of Montana, have invented certain new and useful Improvements in Elevator-Boots, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in elevatorboots, and consists in the novel construction of boot more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a side elevation of the boot. Fig. 2 is an end elevation thereof, being likewise a transverse section through the supporting-timbers on the line 2 2 of Fig. 1. Fig. 3 is a bottom plan showing the rack-and-pinion mechanism for actuating the cleaning-door at the bottom, and Fig. 4 is a vertical longitudinal section on line 4 4 of Fig. 2. i

The object of my inventionis to provide an elevator-boot with an open bottom which is normally closed by a door capable of being withdrawn or opened when occasion arises for cleaning the interior of the boot. The arrangement just referred to allows any and all accumulations to gravitate and fall through the open bottom, making it easy to clean the boot through said bottom.

A further object is to provide an operating mechanism by which the door can be readily opened and closed and which will not interfere'with ready access to the boot.

I am aware, of course, that elevator-boots have been provided with cleaning-doors on the sides; but in such constructions perfect and. complete access to the interior of the boot is not possible and the cleaning is unsatisfactory.

The advantages of the present improvement will be better apparent from a detailed description of the invention, which is as follows:

Referring to the drawings, B represents a conventional form of boot provided with the usual bucket elevator E. The design here shown is eminently adapted in stamp-mills for the handling of crushed and powdered ores and samples, the boot becoming clogged and choked from time to time and requiring cleaning.

Depending from the bottom of the boot is a flange or extension 1, bolted to the timbers T, supporting the boot, said flange forming the bottom discharge-mouth of the boot, normally closed by a sliding door 2, the latter operating in latera grooves or ways 3, which are continued in the side extension-plates 1, secured to the timbers. The bottom face of the door has centrally secured thereto rack 5, with which cooperates a pinion 6 on the transversely-disposed shaft 7, mounted between the timbers T. One end of the shaft carries a hand-wheel 8, which thus occupies a position to one side of the path of travel of the door, allowing for ready access to the bottom for purposes of cleaning the boot when the door is opened. By turning the hand-wheel in the direction shown by the arrow in Fig. 1 the pinion engaging the doorrack will actuate the latter in proper direction to open the door and permit the boot to be cleaned through the bottom.

The shaft 7 is to one side of the opening forming the mouth, so that there is nothing to interfere with the free and uninterrupted gravitation of the contents of the boot during the cleaning process. The plates 4 serve to support the door when withdrawn from the mouth of the boot, the grooves 3 of said plates guiding the door back into position when reentering the grooves of the mouth 1. The general curvature of the boot-walls opposite the buckets is in no wise disturbed, the door sliding tangentially thereto in tlie horizontal ways 3, provided therefor in the mouth 1 and plates 4.

Having described my invention, what I claim is 1. An elevator-boot having plane side walls, and curved walls opposite the elevator of the boot, the curved walls being provided with an opening, and a sliding door for closing said opening operating tangentially to the curvature of the curved walls, substantially as set forth.

2. An elevator-boot having a bottom depending flanged mouth, a horizontally and rectilinearly sliding door for normally closing the mouth, means for guiding the door in its travel to and from its closed position, a centrally-disposed rack carried by the bottom of the door, a transversely-disposed shaft mounted below the boot to one side of the mouth aforesaid, a pinion on the shaft cooperating with the rack, and a hand-wheel at one end of the shaft, the parts operating substantially as and for the purpose set forth.

3. An elevator-boot having curved walls RODGER MU NN.

opposite the elevator operating Within the I boot, and plane side Walls connecting the curved Walls and having a bottom opening in the path of said curved Walls, and a'sliding door for closing said opening, operating tan- Witnesses: gentially to the curvature of the curved Walls, WV. H. SHEERIN, substantially as set forth. H. R. BING. 

